CVE-2026-19931 Affecting libcurl4 package, versions <8.22.0-150700.7.33.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.75% (55th percentile)

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  • Snyk IDSNYK-SLES157-LIBCURL4-22192494
  • published4 Nov 2026
  • disclosed3 Nov 2026

Introduced: 3 Nov 2026

NewCVE-2026-19931  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 libcurl4 to version 8.22.0-150700.7.33.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl4 package and not the libcurl4 package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.

CVSS Base Scores

version 3.1